EV, ECO, POWER MODES.... First I am technically naive so don't laugh to hard. I am observing the following: EV can give me a great few miles and find it useful is slow congested traffic. My issue is once the EV mode depletes the battery I am in ECO mode and seem to be in constant gas consumption (based on the idiot meter on the dash). Someone tell me: if I am able to leave vehicle in ECO mode and hit the sweet spot where the meter is at top of its recording range, am I not getting as good as or better mileage going this route instead of EV Mode? Also....how can I find out how much charge my battery is getting? I have more times than not when Prius says EV isn't available. (putting it into play from a standstill and exceptional slow start)?